155294725 has 12 divisors (see below), whose sum is σ = 195205636. Its totient is φ = 122532480.

The previous prime is 155294719. The next prime is 155294729. The reversal of 155294725 is 527492551.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 6625476 + 148669249 = 2574^2 + 12193^2 .

It is not a de Polignac number, because 155294725 - 2¹¹ = 155292677 is a prime.

It is a super-2 number, since 2×155294725² = 48232903225651250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155294729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40722 + ... + 44371.

Almost surely, 2^155294725 is an apocalyptic number.

It is an amenable number.

155294725 is a deficient number, since it is larger than the sum of its proper divisors (39910911).

155294725 is an equidigital number, since it uses as much as digits as its factorization.

155294725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85176 (or 85171 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 155294725 is about 12461.7304175624. The cubic root of 155294725 is about 537.5087865879.

The spelling of 155294725 in words is "one hundred fifty-five million, two hundred ninety-four thousand, seven hundred twenty-five".